Transport of fructose by a proton symport in a brewing yeast |
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Authors: | David T Cason I Spencer-Martins N van Uden |
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Institution: | Laboratory of Microbiology, Gulbenkian Institute of Science, 2781 Oeiras Codex, Portugal |
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Abstract: | Abstract Saccharomyces cerevisiae IGC4261, a brewing strain, transported fructose and sorbose but not glucose by a high-affinity, low-capacity proton symport. The symport was not subject to glucose repression and coexisted with the facilitated diffusion system for glucose, fructose, sorbose and other sugars. Transport by the symport was accumulative. The stoichiometry was one proton per molecule of fructose. Maltose acted as a non-competitive inhibitor. |
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Keywords: | Saccharomyces cerevisiae fructose transport sorbose transport |
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